Rational arguments and myth busting often won't help you change the mind of a conspiracy theorist. But there are other ways.

Edward Jenner, who pioneered vaccination, and two colleagues (right) seeing off three anti-vaccination opponents, with the dead lying at their feet (1808).
I Cruikshank/Wellcome Images/Wikimedia CommonsJuly 10, 2017

Peter Meylakhs, Russian National Research University The Higher School of Economics ; Yadviga Sinyavskaya, Russian National Research University The Higher School of Economics , and Yuri Rykov, Russian National Research University The Higher School of Economics

In Russia, social networks have given a new life to the conspiracy theory that HIV-AIDS is a global hoax.

Gurneys to remove bodies from the Heaven’s Gate cult house in San Diego, California, March 27, 1997.
AP PhotoMarch 24, 2017